amend some help files to show correct syntax, around the 'clear' commands
swapping [input] and <callsign> in each case, translators please take note.
Thanks to Dave N3RD for info. (g0vgs)
+2. update the addendum for latest build and include information on additional
+modules required. (g0vgs)
20Jan03=======================================================================
1. changed sh/c so that, by default, it only shows the caller's country nodes
sh/c all will show the old style full list. "sh/c sk gb" will show the config